1168 results about "Gear train" patented technology

A two-way oil-collecting reducer and an electric vehicle. The reducer includes an input gear, an intermediate gear set, an output gear, and an oil sump, and the oil sump includes a radial sump opening and a circumferential sump opening. An orientation of the radial sump opening is away from the intermediate gear set along a radial direction of the intermediate gear set. An orientation of the circumferential sump opening faces the output gear along a circumferential direction of the intermediate gear set. The radial sump opening and the circumferential sump opening are formed at the oil sump, so that the oil sump can collect lubricating oil churned by a gear train when the input gear drives, via the intermediate gear set, the output gear to rotate forward or reversely, to increase an amount of lubricating oil collected by the oil sump.

Systems and methods for an electric drive unit. The electric drive unit includes, in one example, a first electric machine rotationally coupled to a first drive wheel via a first gear train and a second electric machine rotationally coupled to a second drive wheel via a second gear train. The electric drive unit further includes a disconnect clutch that is configured to selectively rotationally couple the first electric machine and the second electric machine and a park lock assembly that is coupled to one of the first gear train and the second gear train and is configured to inhibit rotation of the corresponding gear train.

The invention relates to the technical field of circuit breakers, in particular to a circuit breaker with a reclosing mechanism, which comprises a shell, a circuit breaker handle is rotationally arranged in the shell, an operating rod and at least three gears meshed in sequence are further rotationally arranged in the shell, and the tooth number of each gear is gradually increased in sequence. The two gears located on the two sides are a small gear and a large gear respectively, the number of teeth of the small gear is smaller than the number of teeth of the large gear, the operating rod is fixedly connected with the small gear, and the large gear is in transmission connection with a circuit breaker handle. Speed reduction and torque increase are realized through the gear train, so that the force required to be applied when a user manually operates the handle of the circuit breaker is remarkably reduced, the operation intensity is reduced, the convenience of manual reclosing is improved, and the manual reclosing device is particularly suitable for a large-current circuit breaker or an occasion requiring a relatively large operation torque.

The invention provides an electric drive axle assembly and a vehicle with the same, and relates to the technical field of vehicles. The electric drive axle assembly comprises a drive motor; the differential mechanism is connected with a vehicle wheel end through a half shaft; the first planetary gear train at least comprises a first sun gear and a first planetary gear, the first sun gear is connected with an output shaft of the driving motor, and the first planetary gear is arranged on a first planetary carrier; the second planetary gear train at least comprises a second sun gear and a second planetary gear, the second planetary gear is arranged on a second planetary carrier, and the output end of the second planetary carrier is connected with the differential mechanism; and the transmission gear system is connected with the first planetary gear system and the second planetary gear system, and the transmission gear system is used for transmitting power of any one of the first planet carrier and the first sun gear to any one of the second planet carrier and the second sun gear. The problems that an electric drive axle of a commercial vehicle is large in size and unreasonable in gear-speed ratio setting are solved.

The invention provides an axial magnetic flux motor driven RV speed reduction driving assembly which comprises an axial magnetic flux motor unit and an RV speed reducer unit which are connected, the axial magnetic flux motor unit and the RV speed reducer unit are integrated in a shell, the axial magnetic flux motor unit comprises a plurality of stators which are distributed in an annular mode, and the stators are connected with the axial magnetic flux motor unit. A stator is arranged on the rotor, a disc type rotor is arranged on each of the two sides of the stator, a plurality of torsion bars which are uniformly distributed in the circumferential direction are arranged on the rotor facing the side where the RV speed reducer unit is located, the torsion bars are connected with a sun gear of a planetary gear train of the RV speed reducer unit, and an output disc of the RV speed reducer unit is a power output end. The RV speed reduction driving assembly driven by the axial magnetic flux motor has the advantages of being large in starting torque, high in mechanical efficiency, compact in structure, high in overload capacity and the like.

An apparatus for a brake drum having a drum brake assembly with first and second brake shoes includes a motor and a planetary gear train for receiving torque from the motor and having an output gear. A ball ramp assembly receives torque from the output gear and has ends aligned with the respective first and second brake shoes. The motor is actuatable for lengthening the ball ramp assembly to move the brake shoes and apply braking force to the brake drum. A bi-stable locking mechanism selectively locks the planetary gear train to apply a parking brake to the brake drum.

The invention discloses an automobile part aluminum plating tool with overturning and clamping functions, and relates to the technical field of film plating tools, the automobile part aluminum plating tool comprises a driving assembly, a fixed outer frame and a plurality of overturning and clamping assemblies, and each overturning and clamping assembly comprises a deflection connecting rod, a telescopic rod, a workpiece chuck and a guide sleeve rod; when the driving assembly ascends and descends, the deflection connecting rod is driven by the first hinge shaft to deflect, the telescopic rod is forced to slide in the radial direction of the guide sleeve rod, and the workpiece chuck generates clamping / releasing displacement. An inner transmission ring is arranged on an inner ring of the fixed outer frame, a transmission wheel is installed at the lower end of the guide sleeve rod, and when the driving disc rotates, a planetary gear train enabling the overturning clamping assembly to rotate is formed through transmission of the inner transmission ring and the transmission wheel. A multi-drive structure is replaced with mechanical layout, modular layered layout improves efficiency, structural innovation guarantees stability, integration of self-adaptive clamping, composite motion and batch processing is achieved in the field of vacuum coating, and the bottleneck that a traditional tool is insufficient in flexibility and poor in uniformity is broken through.

The invention relates to a stepless speed change electric drive axle system and a vehicle, and the system comprises a motor which is used for providing power; the first gear set is in transmission connection with the motor and distributes power; the input end of the stepless speed regulating mechanism is connected with the first gear set, and the stepless speed regulating mechanism is used for achieving stepless speed change; the planetary gear train comprises a sun gear, a planet gear, an inner gear ring and a planet carrier, the sun gear is in transmission connection with the first gear set, and the inner gear ring is in transmission connection with the output end of the stepless speed regulating mechanism; the differential mechanism is in transmission connection with the planet carrier and used for outputting power to wheels; the first gear set shunts power to the stepless speed regulating mechanism and the sun gear, and the two paths of power are coupled in the planetary gear train and then output to the differential mechanism through the planet carrier. The stepless speed regulating mechanism enables the rotating speed of the inner gear ring to be steplessly adjustable by adjusting the displacement and the rotating speed, so that stepless adjustment of the output rotating speed of the planet carrier is achieved.

A gas turbine engine includes, among other things, a propulsor section including a rotor and blades, a geared architecture including a gear train, a compressor section and a turbine section. A static structure includes a first case and a second case. The first case includes a first engine mount location. The second case includes a second engine mount location. The first engine mount location is axially near the geared architecture.

The invention discloses a planetary gear train type speed reduction differential transmission mechanism and a transmission method thereof, and belongs to the technical field of speed reducers. A stator of the motor is connected with the shell, a rotor of the motor is connected with a first sun gear and arranged outside the first output shaft in a sleeving mode, the first sun gear is meshed with a first planet gear, the first planet gear is meshed with a first gear ring, the first planet gear is installed on a first planet carrier, and the first planet carrier is connected with the first output shaft. The second sun gear is meshed with the second planet gear, the second planet gear is meshed with the third planet gear, the third planet gear is meshed with the second gear ring, and the second planet gear and the third planet gear are both installed on the second planet carrier. The first gear ring is connected with the second planet carrier, and the second sun gear is connected with the second output shaft. Or the gear ring I is connected with the sun gear II, and the planet carrier II is connected with the second output shaft; the first output shaft, the second output shaft, the first planetary gear train, the second planetary gear train and the motor are coaxially arranged. The differential mechanism is compact in structure, large in transmission ratio and easy to manufacture, the differential function is achieved through the planetary gear train, and the technical bottleneck of a traditional transmission mechanism is broken through.

The invention discloses a wind power gear box planetary gear train meshing unbalance load prediction method considering basic motion. The method comprises the following steps: 1) constructing a floating platform non-inertial dynamics model; 2) solving the non-inertial dynamic model of the floating platform to obtain tooth surface unbalance loading coefficients under different platform motion frequencies; 3) calculating a tooth surface unbalance loading coefficient considering the platform motion influence; 4) collecting vibration displacement signals of the gear rings by using vibration sensors arranged on the gear rings of the planetary gear train, and extracting vibration displacement characteristics; 5) constructing a mapping equation between the vibration displacement and the tooth surface unbalance loading coefficient; and 6) utilizing a vibration sensor to collect vibration displacement signals of the planetary gear train gear ring of the gearbox of the floating wind turbine generator in real time, extracting real-time vibration displacement characteristics, and inputting the real-time vibration displacement characteristics into the mapping equation between the vibration displacement and the tooth surface unbalance loading coefficient to obtain the tooth surface unbalance loading coefficient for predicting the meshing unbalance loading of the planetary gear train. According to the method, the accuracy of meshing unbalance loading of the planetary gear train of the gearbox of the offshore floating wind turbine generator is improved.

The invention discloses a gear transmission system nonlinear dynamic modeling method and system considering thermal deformation, and relates to the technical field of gear transmission system dynamic simulation. The method comprises the steps that component parameters and operation parameters of the planetary gear system are received; based on the component parameters and the operation parameters of the planetary gear system, a tooth surface flash temperature model is constructed, and a tooth surface friction coefficient is obtained through calculation; and constructing a tooth profile thermal deformation model, and respectively calculating internal excitation of the planetary gear system considering tooth profile thermal deformation. According to the method, the gear surface flash temperature model, the tooth profile thermal deformation model and the bearing gap model are constructed, the helical tooth planetary gear train-bearing nonlinear dynamic model is established, and the technical defect that the gear temperature rise effect and the nonlinear factors of the bearing cannot be fully considered in traditional helical tooth planetary gear train dynamic modeling is overcome; and the vibration response prediction precision under the high-speed and heavy-load working condition is obviously improved.

A gear speed change device. The gear speed change device comprises a first planetary gear train (100). The first planetary gear train (100) comprises a first ring gear (101), a first planetary carrier (102), first planetary gears (103), a solar idle gear (104), and a planetary idle gear (105). The planetary idle gear (105) and the first planetary gears (103) are all mounted on the first planetary carrier (102); each first planetary gear (103) comprises a pinion (103a) and a large gear (103b) coaxially connected to the pinion (103a); the planetary idle gear (105) and the pinion (103a) are both engaged with the inside of the first ring gear (101) and are both engaged with the outside of the solar idle gear (104); the pinion (103a) can float along the radial direction thereof relative to the first planetary carrier (102), and the maximum radial floating amount of the pinion (103a) is greater than the maximum radial floating amount of the planetary idle gear (105); and the large gears (103b) of at least two first planetary gears (103) are arranged in a staggered manner in the axial direction, and projections thereof on a plane perpendicular to the axial direction overlap with each other. The gear speed change device has a relatively high torque load density, and can give consideration to a small volume, a large transmission speed ratio and a high torque load capability.

A motorized vehicle includes a multi-speed transmission having a plurality of forward gears configured to be selectively engaged to drive the motorized vehicle, an internal combustion engine selectively coupled to the transmission, and a reverse drive system selectively coupled to the transmission to provide torque to drive the motorized vehicle in a reverse direction. The reverse drive system includes an electric motor and a reverse drive gear train configured to be selectively coupled to the transmission. The transmission includes a neutral position in which the internal combustion engine is decoupled from the transmission and freely rotatable relative to the transmission. The reverse drive gear train is configured to be operably coupled to the transmission when the transmission is in the neutral position, such that the reverse drive system is operable to drive the motorized vehicle in the reverse direction without interference from the internal combustion engine.

The invention discloses an artificial joint frictional wear simulation testing machine and a testing method thereof. The testing machine comprises a motion loading module, a sample clamping module and a motion coupling module, the motion loading module mainly drives an upper sample of the sample clamping module to generate fundamental frequency swing through a double four-bar-planetary gear train composite mechanism, and the sample clamping module integrates a quick disassembly and assembly clamp and a temperature control lubrication system to fix various joint prostheses and simulate the physiological environment of the human body. And the motion coupling module cooperates with the motion loading module based on the six-degree-of-freedom parallel platform to realize composite action and suppress vibration interference. Through cooperative control of the three modules, the problems that an existing artificial joint friction and wear simulation testing machine is limited to a single joint type and cannot adapt to various artificial joint prostheses, and the degree of freedom of motion is limited, so that various motion forms of the artificial joint cannot be completely restored are solved.

The present invention relates to a universal drive device comprising: a ring gear; a sun gear, wherein a sun gear axis is movable relative to a ring gear axis of the ring gear; a gear train composed of a series of gears configured to interconnect the sun gear and the ring gear; a link mechanism connected to the sun gear and the ring gear in a state allowing relative rotation between the sun gear and the ring gear so as to continuously maintain a power transmission state between the sun gear and the ring gear while accommodating a change in an inter-axis distance between the sun gear and the ring gear; a planet carrier mounted to support a rotation shaft of a final gear engaged with the ring gear; and a sliding member located between at least one of the gears and the planet carrier.

A reduction gearbox of an aircraft propulsion system includes an input shaft configured to input rotational energy into the reduction gearbox, an output shaft configured to output rotational energy from the reduction gearbox to a propulsor of the aircraft propulsion system, and an epicyclic gear arrangement mechanically coupling the output shaft to the input shaft. A transfer gear is positioned at a component of the epicyclic gear arrangement and is configured to mechanically couple an accessory component to the reduction gearbox.

The invention discloses a vehicle-mounted high-power power supply and distribution system and method, and the method comprises the steps: enabling one end of an engine to be provided with a transmission wheel train and a high-voltage generator during the running process of a vehicle, and enabling the output rotating speed of the engine to be improved to the rated rotating speed of the high-voltage generator through the transmission wheel train; high-voltage direct current output by the generator drives a high-voltage electric appliance to work after being subjected to voltage stabilization and filtering by the high-voltage distribution box; when an automobile is parked and a mains supply is used, alternating-current mains supply is inverted into direct-current power through the high-voltage distribution box to drive a high-voltage electric appliance to work. The defects that a traditional vehicle cannot run and cannot supply power in a high-power mode under the parking condition can be overcome, especially the technical problem of power supply under the parking condition is solved, software system adaptation development is carried out through the comprehensive technical scheme of a high-power high-voltage silicon generator, mains supply inversion, power supply filtering and the like in combination with post-stage power utilization characteristics, and the power supply efficiency is improved. And stable power supply of the air-conditioning system under running and parking conditions is ensured.

The invention provides a helicopter planetary gear bearing ring lower lubrication test bed. The helicopter planetary gear bearing ring lower lubrication test bed comprises a base provided with a mounting plate, a power transmission mechanism, an oil guide mechanism, a flight attitude simulation platform mounted on the lower surface of the base through a connecting assembly, a driving mechanism arranged on the base and a test main body, the test main body comprises a planetary gear train gearbox mounted on the base and a planetary gear train mounted in an inner cavity of the planetary gear train gearbox, and the planetary gear train comprises a sun gear, an inner gear ring, a planet carrier and three planetary gear mechanisms arranged on the planet carrier; the planetary gear mechanism comprises a hollow planetary shaft installed on the planetary carrier and a planetary gear embedded with a test bearing and an auxiliary bearing, the planetary gear is sleeved on the hollow planetary shaft, the planetary gear is meshed with the sun gear, and the planetary gear is meshed with the inner gear ring. According to the invention, the test bearing can rotate and revolve at the same time while simulating the real operation condition of the helicopter, so that the lubrication effect of the helicopter planetary gear bearing can be effectively evaluated.

According to the aero-engine planetary gear transmission system capable of achieving stepless speed change, motion decomposition and synthesis can be conducted through a two-stage planetary gear train and a motor system, and stepless speed change of the gear transmission system is achieved. In other words, stepless speed change of the gear transmission system can be achieved only by changing the load of the adjustable-speed motor or changing the input rotating speed and the input rotating direction of the adjustable-speed motor under the two working conditions. The structure is simple, and the purposes of optimizing the performance of an aero-engine system, improving the efficiency and improving the economical efficiency can be achieved only by adjusting the power distribution mode, the operation rotating speed, the working torque and the like between the high-pressure rotor and the fan rotor of the engine.

The utility model relates to the technical field of transmission, in particular to an electric driving system provided with a one-way bearing, which specifically comprises a box body, a first planetary gear train, a second planetary gear train, a first motor, a first motor shaft, a second motor, a second motor shaft, a fifth transmission wheel, an output wheel and a pedal shaft, at least one second planet shaft is connected with a fifth transmission wheel; the output wheel is in transmission fit with the fifth transmission wheel through the second transmission wheel; a third transmission wheel on the pedal shaft is in transmission fit with the gear ring; a second motor shaft of the second motor is arranged on the box body through a second bearing; the second bearing is a one-way bearing, so that the second motor shaft can only freely rotate in a preset direction; the third transmission wheel is sleeved on the pedal shaft through a first bearing; the first bearing is a one-way bearing so that torque can be input from the pedal shaft in a one-way mode. In this way, stepless speed change adjustment can be achieved through double-motor regulation and control, the overall structure is simple, and cost is lower.

The invention belongs to the technical field of gear transmission, and relates to a planetary gear train structure, in particular to a herringbone tooth planetary transmission speed reduction structure. Comprising a sun gear, nP planetary gears, a first inner gear ring, a second inner gear ring, a planetary gear carrier, a planetary gear mounting disc, a planetary gear pin shaft, a planetary gear bearing, a locking nut, a connecting bolt, a spline housing, a pressing plate, a spacer sleeve, a positioning bush and a screw. Through the spline floating design of the sun gear and the inner gear ring, the uniform load adjusting effect when load distribution is not uniform due to error accumulation and the like in the working process of the herringbone tooth planetary mechanism can be achieved. The inner gear ring is designed into a split design and combination form of the first inner gear ring, the second inner gear ring, the planetary gear mounting disc, the planetary gear pin shaft and the planetary gear carrier, and the problem of assembly interference of herringbone tooth planetary transmission can be solved.

A system and method for a hybrid electric axle. The hybrid electric axle system, in one example, includes an engine interface assembly with a one-way clutch that is rotationally coupled to an input shaft and a gear shaft in a gear set that is rotationally coupled to a differential and a dog clutch configured to selectively rotationally couple the input shaft and the gear shaft in the gear set. The hybrid electric axle system further includes an electric drive assembly including a traction motor that is rotationally coupled to a gear train. In the electric axle system, the gear train is rotationally coupled to the differential and the engine interface assembly and the electric drive assembly are packaged in an axle housing.

The asphalt mixture mixing device comprises a support, a mixing drum, a mixing assembly and an asphalt spraying assembly, the two ends of the mixing drum are open, and guide grooves are formed in the two ends of the mixing drum; two groups of racks are symmetrically arranged on two sides of the end part of the mixing drum, and a guide rail and a sliding seat slidably connected to the guide rail are also arranged at one end of the mixing drum; the stirring assembly comprises a side plate which is embedded in the guide groove in a clearance manner and can move up and down; an inner gear ring is arranged on the side plate, the transmission mechanism comprises a center wheel and a plurality of planet wheels meshed with the center wheel and the inner gear ring at the same time, stirring shafts are fixedly connected to the center wheel and the planet wheels, and stirring blades are arranged on the stirring shafts; and a half gear is arranged on the outer cover plate and is alternately meshed with the racks on the two sides of the stirring barrel in the rotating process. Revolution and rotation of the planetary gear train are combined with lifting motion driven by the half gear and the rack, so that the problems of stirring dead angles and material segregation are avoided, and the uniformity of mixed materials is improved.

The invention discloses a multi-mode integrated redundancy driving and braking integrated electric wheel system. The system comprises a hub motor, a first-stage planetary gear train, a second-stage planetary gear train, a braking system, a wheel unit and a bearing system. According to the system, two sets of planetary gear trains are used for composite transmission, and multi-mode gear shifting operation of the planetary gear trains is matched, so that the hub motor can serve as an execution motor responsible for driving work of the wheel unit and braking work of the braking system at the same time, and the system has the functions of driving, traveling braking, reversing braking and parking braking; driving and braking integrated design and control of the electric wheel system can be achieved, the energy utilization rate of the whole vehicle is improved to the maximum extent, meanwhile, due to the fact that a braking system execution motor and a speed reducer thereof are omitted, sprung mass is greatly reduced, controllability and driving comfort of the whole vehicle are improved, and cost is reduced. The electric wheel system has great significance in light weight and high integration design, in addition, the system has a redundant function in service braking and parking braking, and the safety is improved.

The invention discloses an industrial vehicle damping structure which comprises a vehicle frame, a vertical plate installed above the vehicle frame, a driving seat and a rear elastic damping piece, the driving seat is hinged to the rear side face of the vertical plate, a driving wheel is installed below the driving seat, the two ends of the rear elastic damping piece are connected with the driving seat and the vertical plate respectively, and locking oil cylinders are further installed on the vehicle frame and the driving seat. When the vehicle works, the locking oil cylinder is locked, and the driving wheel is rigidly connected with the frame, so that the stability of the vehicle during working is ensured, and the safety is improved; when the forklift runs, the locking oil cylinder is released, the driving wheel is in floating connection with the rear end of the frame through the driving seat and the rear elastic damping part, the rear elastic damping part provides a damping effect, the vibration sense and noise generated when the forklift passes through an uneven road surface are effectively reduced, and the driving comfort and the NVH performance of the whole forklift are improved. The rigid-flexible switching of the connection between the suspension wheel train and the frame is carried out under different working conditions, so that the driving comfort and the operation safety are ensured.

A single-motor-driven planetary gear train electric drive axle comprises a drive motor, a main speed reduction unit, a planetary speed reducer and a differential mechanism which are in transmission connection in sequence. A sun gear of the planetary reducer is connected with a sun gear shaft, an inner gear ring is fixed, and a planet carrier is in transmission connection with the differential. A gear shifting mechanism is further arranged between the main speed reduction unit and the planetary speed reducer and used for connecting power connection between the main speed reduction unit and the sun wheel shaft or power connection between the main speed reduction unit and the planet carrier. According to the electric drive axle, the gear shifting mechanism is arranged at the output end of the main speed reduction unit, the sun gear and the planet carrier are arranged, the inner gear ring is fixed, the occupied space is small, and the weight is lighter. When first-gear large-torque output is carried out, a transmission system has the requirements for high strength and high rigidity, the requirement for second-gear efficient operation is met, the part machining difficulty of a planet row gear shifting mechanism is lowered, the strength and reliability of an electric drive axle assembly for planet row gear shifting are effectively improved, and the product machining and assembling difficulty is effectively lowered.

A cutter assembly including one or more of a blade subassembly, a pulley subassembly, and a clamping subassembly is provided. The blade subassembly may include a carriage retaining a blade configured for translational motion along a guiderail. The carriage may be coupled to a belt of the pulley subassembly, and one or more pulleys supported by the frame may be configured to drive linear motion of the belt, thereby generating translational motion of the carriage. In some instances, a motor connected to a gear train may be operably coupled to the one or more pulleys and the belt. In some instances, a clamp of the clamping subassembly is provided to be releasably engaged by the carriage. One or more spring members acting on the clamp may cause the clamp to initiate an automatic cleaning action of the blade when the clamp is engaged by the carriage.

Various motorized device designs with backlash detection systems are shown. In a specific embodiment, a motorized laser level mount includes a rotatable laser platform, a housing cover, a housing, a gear train and a backlash detection system. The backlash detection system coupled to the motor and the laser platform and configured to determine when backlash has been removed from the gear train.

The invention discloses an air-ground power multiplexing hovercar adopting electric wheel angle modules. The air-ground power multiplexing hovercar integrates electric wheels, a suspension system, a steering system, a car body and a support system. The hovercar has the dual-mode function of a land mode and a flight mode, and switching between the land mode and the flight mode is completed through cooperative work of the electric wheels, the steering system and the support system. Wherein the electric wheels and the steering system both adopt high-integration power multiplexing design, that is, a land mode and a flight mode multiplex the same set of execution motor and planetary gear train, so that the problems that too many actuators are introduced due to switching of the flight mode and the dual modes, the light weight level is low due to miscellaneous equipment, and the power consumption is low are solved to a great extent. And the problem of low-efficiency carrying of invalid loads caused by two sets of independent power is solved. The electric wheel angle module of the hovercar adopts a modular design and is also suitable for four-wheel, six-wheel and other multi-axle vehicle frameworks, and proper electric wheel angle modules can be matched and mounted according to vehicle performance requirements.